Pencil sharpener



. Jan. 24, 1933. w wHlTFORD 1,895,359

PENC IL SHARPENER Filed Jan. 18, 1952 2 Sheets-Sheet 1 INVENTOR ATTOR N EY Jan. 24, 1933.

PENCIL SHARPENER Filed Jan. 18, 193,2

2. Sheets-Sheet 2 ATTORNEY w. H. WHITFORD 1,895,359

Patented Jan. 24, 1933 I 7 i i.

,. -UNETED STATES PATENT wILLI AM In. wnrrronn, or 'runsn, OKLAHOMA I V rnncnz. snAnrnnnn Application filed ianuar iaii'asa. "serial No. 587,331. I

This invention relates to p'encil sharpen- Figure 8 is a view of the rack .merhber ers, and its general object is to provide a which constitutes apart ofth'esh'arpener. sharpener primarlly designed for mechan'l- F1gure'9 is a s'nmlar view ofthe spring cal pencils, the sharpener includingv a housmember. ing detachable from one end of the body of 7 Referring to the drawnigs'in detaihit will the pencil for the purpose of being received be :noted that I haveillustrated a mechani. by the writing end thereof to sharpen the cal pencil constructed to accommodate my lead refill projecting from said end, with the s'harpener,but I want it understood that the result the sharpener at all times is carried by Sharpener can be constructed as a unit -sepm the pencil and can be used to provide a point arate and distinct from a pencil and can be V on the lead in an easy and expeditious manused with any type of mechanical pencil, or ner. pencils and the like of any kind as well as the Another objectfof the invention is to prousual wood gcased lead pencil nowin general vide a sharpener of the character set forth, use.- I a V 15 that is extremely efficient in operation and The body of thejpencil is indicated by the 651 service. V I reference numeral land has one end portion 'This invention alsoconsists in certain'othe'r taperedlin the usual manner to provide the p features of construction and in the combinawriting end or the end through whichprotion and arrangement of the several parts, to; jects the lead refill, as clearly shown in Figbe hereinafter fully described, illustrated in ure' 1Q The opposite end portion of the pen the accompanying drawings and specifically oil is reduced to frictionally receive thehouspointed out in the appended claim. ing 2 of my sharpener, and this reduced per- In describing my invention in-detail,referti-on provides an annular shoulder for the, ence willbe had to the accompanying drawopen end of the housing which is tubular.

ings wherein like characters denote like or The housing n 't ly acc m dat "th corresponding parts throughout the several sharpener parts, but also encloses the eraser views, and in which: I of the pencil when the sharpener is not inuse Figure 1 is a view of a mechanical pencil as will be noted upon'inspection of Figure 2, constructed to accommodate my sharpener and'th'e housing may havesecuredtheretoa 30 and illustrates the latter associated thereli h n in Figur 1.

with. V The outer end of the housing 2 is reduced Figure 2 is a longitudinal sectional view as at 3 and secured to the reduced end is taken through the housing-of my sharpener a r k member 4 which-is provided with 21 attached to the eraser end of the body of the bor extending longitudinally therethrough pencil with the sharpener parts in elevation. and i clude a ring 5 having extending there- 35 Figure 3 is an enlarged elevation of the from ra k teeth 6 for a purpose which will sharpener removed from its housing, with a b r entl arent, The ring 5 together P i SectiOIlwith the rack teeth are arranged within the Figure 4 is a longitudinal sectional view r du d nd, and passing through the bore taken through the sharpener with parts in of th rackinember is a Shaf 7 -h section and in elevation and illustrates the r d t 'it ut r end a'knob 8 through the Sharpener in 1 POSitiOH- instrumentality of apin 9 as shown in Fig- Figure 5 is all end elemtlonlooking into ureAQ The knob isserrated toprovi'de a the open end of the housing. finger. gripping surface, and the shaft has Figure 6 is a sectional view taken approxformed Wltll' its inner end a disklO from imately on line 6-6 of Figure 4, looking in which extends strips 11, one of the ends of the direction of the arrows. which are secured within the disk 10, while Figure 7 is a sectional View taken approxitheir opposite ends are secured within a mately on line 77 of Figure 4, looking'in block 1'2. I v

the direction of the arrows. The block 1E2, is substantially disk shape but has provided in its sides recesses formlng bearings for one of the ends of a pair of shafts 13, and the opposite ends of these I shafts are journaled in bearing bores arranged in the disk 10. The shafts 13 are disposed at right angles with respect to the strips 11 and have secured thereto adjacentone end sprocket gears 14 that are arranged in mesh with the teeth 6 of the rack member 4: as clearly shown in Figure 7, while secured to the shafts 13 adjacent the opposite ends thereof are sharpening rollers 15 which are truncated conical shape and are arranged to cooperate with each other for sharpening the lead refill of the pencil as clearly shown in Figure l'. 1 T j I In order to hold the ends of'th-e shafts '13 I in the recesses of'the block 12,1 provide a spring member 16 that issubstantially U- shape in formation and has its bight portion secured in slots arranged in the strips 11', the

7 strips being enlarged as at'17 to provide the I tapered for said are of slots as will be noted upon inspection of Figure 4' and the spring member is secured in the slots by a' cross piece 18 that has its ends secured to the strips as shown in Figure 3. The arms ofthe spring member 16 are disposedat an inclination with respectto each other and in diverging relation as shown in Figure 9, andthe free portions of the arms which are indicated by the reference numeral 19 are bent at right angles with respectto the remaining portions thereof to be arranged in parallelism with the recesses of the block 12, the free portions are cut away to provide a bearing surface for cooperation with therecesses of the block 12 to ac commodate the shafts13 as clearly shown in Figure6.

"The block-12 has formed therethrough a bore to receive theouter; end of the tapered portion of the body ofthe pencil as shown in Figuret, and the bore ofthe block is re.- stricted for the passage of thelead refill vtherethrough, with 'theresult the portion of the bore which accommodates the end of the portion acts in the capacityas a stop whereby it fits the tapered portion-of the pencil adjacent its juncturewith the remaining portion of the body; Fri-ctionally sethe scope of the appended pencil and comprising a housing,

having free ends end, 'but'the housing 1s of; a sizefrom the position as shown in Figure 2, to the position as shown in Figure 4. The knob 8 is rotated which results in the rotation of the sharpening rollers 15 and this action isaccomplished through the medium of the shafts l3 and the sprocket I the lead will be sharpened in orderto provide an efficient W apparent.

The spring arms urge the rollers toward each other and provide cushion means therefor, with the result breakage of the lead during the sharpening action is prevented, yet at the same time the lead is sharpened in an expeditious manner.

iting point as will be gears 14, with the result It is thought from the foregoing description-that the advantages and novel features of my invention will be readily apparent.

I desire it; to be understood that I may make changes in the construction andin'the" passingthrough said bore and securedto said disk, a knob secured toithelas't mentioned to rotate the means for rotating said disk shafts about the axis of the disk, sprocket gears secured to said shafts and meshin g with the teeth of therack member to rotate each of the shafts'about its axis, a block havingrecesses arranged therein to receive the opposite ends of said shafts, strips secured to the block and disk respectively, a spring member secured to said strips andincluding arms a formed to cooperate with the recesses toprovide bearings'for the said or opposite ends of the shafts, sharpening rollers secured to said shafts and disposed for cooperation, and means-for-directing leadto the sharpening rollers.

I Intestimony whereof I affiX' my signature.

' WILLIAM H. WHITFORD.

cured within the housing is a relatively thick I diskblockQO that has one of its faces recessed to accommodate the block 12, and the disk block 20 is provided with a bore that registers with the bore of the block 12 as will be noted uponinspection projecting portion of the of Figure 4., The opposite face'of thedisk blockis tapered to a slightdegree for direct} ing the head toward the bore thereof. "The tapered faces of the sharpening rollers course provided with teeth, and when it is desired'to use the sharpener in the form t as shown, it is removed from the eraser end of the pencil to the writing end thereofor 

